diff --git a/libgambatte/libretro/libretro.cpp b/libgambatte/libretro/libretro.cpp
index 6a79430..9cf69c8 100644
--- a/libgambatte/libretro/libretro.cpp
+++ b/libgambatte/libretro/libretro.cpp
@@ -150,7 +150,6 @@ void retro_set_environment(retro_environment_t cb)
       { "gambatte_gb_gbamode", "GBA mode; disabled|enabled" },
       { "gambatte_gb_colorization", "GB Colorization; disabled|enabled|custom" },
       { "gambatte_gbc_color_correction", "Color correction; enabled|disabled" },
-      { "gambatte_gb_force_dmg", "Force DMG Mode; disabled|enabled" },
       { NULL, NULL },
    };
 
@@ -483,13 +482,6 @@ bool retro_load_game(const struct retro_game_info *info)
    if (gb.load(info->data, info->size, gbamode ? gambatte::GB::GBA_CGB : 0) != 0)
       return false;
 
-   bool force_dmg = false;
-   var.key = "gambatte_gb_force_dmg";
-   if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value && !strcmp(var.value, "enabled")) force_dmg=true;
-
-   if (gb.load(info->data, info->size, force_dmg ? gambatte::GB::FORCE_DMG : 0) != 0)
-      return false;
-
    rom_path = info->path ? info->path : "";
    strncpy(internal_game_name, (const char*)info->data + 0x134, sizeof(internal_game_name) - 1);
    internal_game_name[sizeof(internal_game_name)-1]='\0';